Weakness Type (CWE)

CWE-770 — CWE-770 Allocation of Resources Without Limits or Throttling

CAPEC

CVSS 4.0 Score

5.9

MEDIUM

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability description

Allocation of Resources Without Limits or Throttling vulnerability in membraneframework membrane_mp4_plugin allows unauthenticated denial-of-service via BEAM atom table exhaustion.

The MP4 box header parser converts each 4-byte box name to an atom using String.to_atom/1 without validation. 'Elixir.Membrane.MP4.Container.Header':parse_box_name/1 in lib/membrane_mp4/container/header.ex interns every box name encountered while 'Elixir.Membrane.MP4.Container.Header':parse/1 walks the input. BEAM atoms are never garbage-collected, so each unique attacker-controlled 4-byte name is a permanent allocation. A crafted MP4 of approximately 8 MB containing roughly 1.1 million boxes with distinct non-standard names exhausts the atom table (default ceiling around 1,048,576 atoms), aborting the entire BEAM node and taking down all applications running on it.

This issue affects membrane_mp4_plugin from 0.3.0 before 0.36.7.

Affected

pkg:hex/membrane_mp4_plugin

Module Source File Routine
Elixir.Membrane.MP4.Container.Header lib/membrane_mp4/container/header.ex Membrane.MP4.Container.Header.parse/1
Membrane.MP4.Container.Header.parse_box_name/1
Status Type Version Changes / Fixed in
affected semver ⓘ 0.3.0 < 0.36.7

pkg:github/membraneframework/membrane_mp4_plugin

Module Source File Routine
Elixir.Membrane.MP4.Container.Header lib/membrane_mp4/container/header.ex Membrane.MP4.Container.Header.parse/1
Membrane.MP4.Container.Header.parse_box_name/1
Status Type Version Changes / Fixed in
affected git ⓘ ae4bf04c39 < 56373d1ddc

References

Credits

  • Finder: Łukasz Kita
  • Remediation developer: Łukasz Kita
  • Remediation developer: Mateusz Front
  • Analyst: Jonatan Männchen / EEF

CVE record as JSON:  GET /cves/CVE-2026-53423.json
OSV record as JSON:  GET /osv/EEF-CVE-2026-53423.json